Hi All,
I'm a newbie to xCAT installation.
I'm trying to setup xCAT for my hpc cluster. My requirement regarding DNS
is little different and hope some one would help me resolve the issue
currently I'm facing.
I setup the management node with hpc.mydom.net as my hpc domain. My cluster
each node has 3 interfaces private, public and Infiniband respectively. My
organization domain is mydom.net which is hosting records for the entire
organization and I cannot register all my HPC node names in the same
domain. Hence I setup a local DNS in my management node.
I want all my compute nodes to resolve all hosts registered under
mydom.netaswell as
hpc.mydom.net.
To make it simple:
mydom.net (NS1)
|
|
hpc.mydom.net (xcatMGMT)
|
|
nod1.hpc.mydom.net (my compute nodes)
nod2.hpc.mydom.net
.
.
.
*Typically I want my nod2.hpc.mydom.net <http://nod2.hpc.mydom.net> to
resolve node1.hpc.mydom.net <http://node1.hpc.mydom.net> and
licserv1.mydom.net <http://licserv1.mydom.net> both IPs.*
What I wanted to do is any name resolution which does not belong to
hpc.mydom.net should forward to mydom.net, but when I verify the
configuration I see the zone definition in my xcatMTMT it looks like the
below and hence it's not able to resolve licserv1.mydom.net IPs
zone "mydom.net" in {
type master;
allow-update {
key xcat_key;
};
file "db.mydom.net";
};
I understood that my xcatMGMT is thinking that it's master for mydom.net,
and due to which the name resolution is not happening for servers such as
licserv1.mydom.net, etc.,
I tried to change the DNS configuration manually, but whenever I run
makedns it's just overwriting all my previous configuration. Is there any
way that I only add new nodes in the hpc.mydom.net domain and does not
overwrite dns configuration?
A glance on my site configuration and network configuration is below:
# lsdef -t site -i domain,nameservers,forwarders
Object name: clustersite
domain=hpc.mydom.net
forwarders=172.27.0.252,172.27.0.254
nameservers=192.168.20.1
# lsdef -t network ibnet4,publicnet4,clusternet4
Object name: ibnet4
dhcpserver=192.168.20.1
dynamicrange=192.168.30.88-192.168.30.175
mask=255.255.255.0
mgtifname=eth0
net=192.168.20.0
Object name: publicnet4
dhcpserver=192.168.20.1
domain=mydom.net
dynamicrange=10.1.0.11-10.1.0.200
gateway=10.1.0.1
mask=255.255.0.0
mgtifname=eth0
net=10.1.0.0
Object name: clusternet4
dhcpserver=192.168.20.1
domain=hpc.mydom.net
dynamicrange=192.168.20.88-192.168.20.175
mask=255.255.255.0
mgtifname=eth0
net=192.168.20.0
tftpserver=192.168.20.1
Any other suggestions also welcome . Thanks for your guidance in advance.
Regards
Srikanth Gumma
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